Home network system and method

• US 8,761,200 B2
• Filed: 08/30/2001
• Issued: 06/24/2014
• Est. Priority Date: 08/30/2000
• Status: Expired due to Fees

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Kliger, Avi, Kopelman, Rami, Avishay, Nachum, Shtern, Alon, Wassermann, Amir
• Primary Examiner(s): Hamza, Faruk
• Assistant Examiner(s): DECKER, CASSANDRA L
• Application Number:
  US09/943,424
• Publication Number:
  US 20020069417A1
• Time in Patent Office: 4,681 Days
• Field of Search: 370/468
• US Class Current: 370/468
• CPC Class Codes: H04L 12/28 characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks] wireless communication networks H04W ; arrangements for dividing the transmission path H04W40/00
• CPC Class Codes: H04L 12/2803 Home automation networks
• CPC Class Codes: H04L 12/283 Processing of data at an internetworking point of a home automation network
• CPC Class Codes: H04L 12/2836 Protocol conversion between an external network and a home network controlling appliance services of a home automation network from a device located outside the home and the home network H04L12/2818; protocol conversion H04L69/08; adaptation of digital video signals for transport over a specific home network H04N7/24
• CPC Class Codes: H04L 12/2838 Distribution of signals within a home automation network, e.g. involving splitting/multiplexing signals to/from different paths adaptations of television systems for transmission by electric cable for domestic distribution H04N7/106; hybrid transport H04L12/6418; home network arrangements specially adapted for distribution of digital video signals H04N7/24
• CPC Class Codes: H04L 12/40071 Packet processing; Packet format adaptation of digital video signals for transport over a specific network H04N21/2381, H04N21/4363, H04N21/4381; packet switches H04L49/00; intermediate storage or scheduling H04L49/90
• CPC Class Codes: H04L 12/40078 Bus configuration home automation networks H04L12/2803; arrangements for maintenance or administration H04L41/00
• CPC Class Codes: H04L 12/40084 Bus arbitration
• CPC Class Codes: H04L 12/40091 Bus bridging LAN interconnection over a bridge based backbone H04L12/462; single bridge functionality H04L12/462
• CPC Class Codes: H04L 12/40097 Interconnection with other networks LAN interconnection over a bridge based backbone H04L12/462; single bridge functionality H04L12/462
• CPC Class Codes: H04L 12/40117 Interconnection of audio or video/imaging devices home automation networks H04L12/2803; bitstream network arrangements specially adapted for distribution of digital video signals H04N7/24
• CPC Class Codes: H04L 12/4625 Single bridge functionality, e.g. connection of two networks over a single bridge
• CPC Class Codes: H04L 2012/2841 Wireless
• CPC Class Codes: H04L 2012/2849 Audio/video appliances
• CPC Class Codes: H04L 2012/445 with switching in a hub, e.g. ETHERNET switch
• CPC Class Codes: H04N 21/2383 Channel coding or modulation of digital bit-stream, e.g. QPSK modulation arrangements for detecting or preventing errors in the information received by adapting the channel coding H04L1/0009; analogue front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002
• CPC Class Codes: H04N 21/4122 additional display device, e.g. video projector digital output for controlling a plurality of local displays G06F3/1423
• CPC Class Codes: H04N 21/42607 for processing the incoming bitstream
• CPC Class Codes: H04N 21/43615 Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals home Audio Video Interoperability [HAVI] data switching networks H04L12/2805
• CPC Class Codes: H04N 21/43632 involving a wired protocol, e.g. IEEE 1394 high-speed IEEE 1394 serial bus H04L12/40052
• CPC Class Codes: H04N 21/4382 : Demodulation or channel decoding, e.g. QPSK demodulation analog front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002
• CPC Class Codes: H04N 21/6118 : involving cable transmission, e.g. using a cable modem
• CPC Class Codes: H04N 7/102 : Circuits therefor, e.g. noise reducers, equalisers, amplifiers H04N7/108 takes precedence
• CPC Class Codes: H04N 7/106 : for domestic distribution

Abstract

A home network, in one embodiment including a home wiring system; a demarcation point unit in electrical communication with the home wiring system; and a home network module in electrical communication with the home wiring system. The home network module is adapted for connection to a home electronic device. The demarcation point unit passes data to and receives data from the home electronic device through the home network module.

Claims

1. A method for communicating over a home network comprising a coax backbone, the method comprising:

selecting, by a plurality of network modules coupled to the coax backbone, one of the plurality of network modules to operate as a master module, wherein each of the plurality of network modules is configured to operate as the master module by at least assigning a respective identifier to each of the plurality of network modules when selected to operate as the master module;

assigning, by the master module, the respective identifier to each of the plurality of network modules;

establishing direct communication between the plurality of network modules, wherein each of the plurality of network modules are located within a home, over the coax backbone;

establishing direct communication between the plurality of the network modules and a demarcation point unit,

said plurality of network modules being coupled to the demarcation point unit via the coax backbone,

said demarcation point unit providing an interface between the home network and an external network,

said demarcation point unit being separate from the master module,

said establishing direct communication between each of the plurality of network modules for establishing communication on a home network side of the demarcation point unit;

using the master module to receive requests sent over the coax backbone from the plurality of network modules for bandwidth to transmit bursts;

establishing an order of transmission opportunities for the plurality of network modules to follow when transmitting bursts directly to other network modules via the coax backbone; and

using the master module to transmit an allocation burst that comprises the assigned identifiers of at least some of the plurality of network modules over the coax backbone, the allocation burst allocating a transmission opportunity to the at least some of the plurality of network modules identified by the assigned identifiers to transmit bursts comprising variable sized packets directly to other network modules via the coax backbone, said transmission opportunity that depends at least in part on an amount of data ready for transmission in a selected transmission cycle, said allocation burst being based on said transmission order.

2. The method of claim 1, wherein selecting, by the plurality of network modules coupled to the coax backbone, the one of the plurality of network modules to operate as the master module further comprises electing, by the plurality of network modules coupled to the coax backbone, the one of the plurality of network modules to operate as the master module.

3. The method of claim 1 further comprising synchronizing the plurality of network modules to a predetermined burst transmitted by the master module.

4. The method of claim 1 further comprising allocating an amount of bandwidth to each of the plurality of network modules requesting a guaranteed quality of service.

5. The method of claim 4 further comprising changing the amount of bandwidth allocated.

6. The method of claim 4, further comprising using the master module to change the order of transmission opportunities and to change the amount of bandwidth allocated.

7. The method of claim 1 further comprising receiving over the coax backbone, at a designated network module, a grant signal that indicates that the designated network module can transmit a burst.

8. The method of claim 1 further comprising transmitting, by a designated network module, an empty burst if the designated network module has no data to transmit.

9. The method of claim 1 further comprising using the master module to change the order of transmission opportunities.

10. The method of claim 1 further comprising using the master module to allocate an opportunity to a network module involved in a registration process, said opportunity for transmitting a self-training burst.

11. A home network comprising:

a coax backbone;

a plurality of network modules,

each of said plurality of network modules being connected to the coax backbone,

each of said plurality of network modules configured for location within a home, each of the plurality of network modules being configured to operate as a master module by at least assigning a respective identifier to each of the plurality of network modules when determined to operate as the master module,

said plurality of network modules being in direct, exclusively in-home, communication via at least one splitter with a demarcation point unit over the coax backbone,

said demarcation point unit providing an interface between the home network and an external network,

said demarcation point unit being external to the plurality of network modules; and

the master module being connected to the coax backbone and being determined, by the plurality of network modules, from the plurality of the network modules,

the master module assigning the respective identifier to each of the plurality of network modules,

the master module that receives requests from the plurality of network modules over the coax backbone,

the master module that is located within the home and allows access to the home network from a cable head-end,

the requests being for bandwidth to transmit bursts directly over the coax backbone to other network modules,

the master module that establishes a transmission order of transmission opportunities for the plurality of network modules to follow when transmitting bursts to other network modules and that transmits a burst comprising the assigned identifiers of the plurality of network modules over the coax backbone that allocates a transmission opportunity to each of the plurality of network modules to transmit bursts comprising variable sized packets,

said burst being based on said transmission order,

said transmission order being based at least in part on said received requests,

wherein each of the plurality of network modules is configured to communicate with other network modules via the coax backbone and

wherein a parameter of a transmission opportunity for a selected network module depends at least in part on an amount of data ready for transmission at the selected network module in a selected transmission cycle.

12. The home network of claim 11 wherein, in response to a predetermined burst transmitted by the master module, the plurality of network modules are synchronized.

13. The home network of claim 11 further comprising bandwidth allocated to each of the plurality of network modules requesting a guaranteed quality of service.

14. The home network of claim 11 further comprising a grant signal that indicates that a given network module can transmit a burst.

15. The home network of claim 11, wherein the selected network module is configured to transmit an empty burst to communicate that the selected network module includes no data to transmit.

16. The home network of claim 11 wherein the master module is configured to change the order of transmission opportunities.

17. The home network of claim 11 further comprising a self-training burst that is configured to be received by a network module involved in a registration process.

18. An integrated circuit storing computer-executable instructions which, when executed by a processor on a computer system, perform a method, the method comprising:

in a home network having a plurality of network modules, each of said plurality of network modules being located within a home,

each of said plurality of network modules being configured to operate as a master module by at least assigning a respective identifier to each of the plurality of network modules when selected to operate as the master module,

each of said plurality of network modules being connected to a coax backbone,

said plurality of network modules communicating over the coax backbone, the communicating comprising;

determining, by the plurality of network modules, one of the plurality of network modules to operate as the master module;

assigning, by the master module, the respective identifier to each of the plurality of network modules;

establishing direct communication between two or more of the plurality of network modules over the coax backbone;

establishing direct communication between two or more of the plurality of the network modules and a demarcation point unit, said plurality of network modules being coupled to the demarcation point unit via the coax backbone, said demarcation point unit providing an interface between the home network and an external network, the establishing direct communication between two or more of the plurality of network modules over the coax backbone for establishing direct communication between the two or more of the network modules without the communication passing through the demarcation point unit onto the external network, said demarcation point unit being separate from the master module;

using the master module to receive requests sent over the coax backbone from the plurality of network modules for bandwidth to transmit bursts;

in response to receiving the requests, establishing an order of transmission opportunities for the each of the plurality of network modules to follow when transmitting bursts that comprise variable sized packets directly to other network modules; and

using the master module to transmit an allocation burst that comprises the assigned identifiers of the plurality of network modules over the coax backbone that allocates a transmission opportunity to each of the plurality of network modules to transmit bursts, said allocation burst being based on said transmission order, said transmission opportunity that depends at least in part on an amount of data ready for transmission in a selected transmission cycle.

19. The integrated circuit of claim 18, wherein determining, by the plurality of network modules, one of the plurality of network modules to operate as the master module further comprises electing, by the plurality of network modules, one of the plurality of network modules to operate as the master module.

20. The integrated circuit of claim 18, the method further comprising synchronizing the plurality of network modules to a predetermined burst transmitted by the master module.

21. The integrated circuit of claim 18, the method further comprising allocating an amount of bandwidth to each network module requesting a guaranteed quality of service.

22. The integrated circuit of claim 21, the method further comprising changing the amount of bandwidth allocated.

23. The integrated circuit of claim 21, the method further comprising using the master module to change the order of transmission opportunities and to change the amount of bandwidth allocated.

24. The integrated circuit of claim 18, the method further comprising receiving over the coax backbone, at a selected network module, a grant signal that indicates that the selected network module can transmit a burst.

25. The integrated circuit of claim 18, the method further comprising transmitting, by a selected network module, an empty burst if the selected network module has no data to transmit.

26. The integrated circuit of claim 18, the method further comprising using the master module to change the order of transmission opportunities.

27. The integrated circuit of claim 18, the method further comprising using the master module to allocate an opportunity to a network module involved in a registration process, said opportunity for transmitting a self-training burst.

28. A method for communicating over a network comprising a coaxial backbone, the method comprises:

selecting, by a plurality of network modules coupled to the coaxial backbone, one of the plurality of network modules to operate as a master module, wherein each of the plurality of network modules is configured to operate as the master module by at least assigning a respective identifier to each of the plurality modules when selected to operate as the master module and

at least one of the plurality of network modules comprises a gateway device that provides an interface between the network and an external network;

registering, by the master module, the plurality of network modules;

assigning, by the master module, the respective identifier to each of the plurality of network modules;

synchronizing, by the master module, the plurality of network modules;

allocating, by the master module, bandwidth to at least some of the plurality of network modules using an allocation burst that comprises the respective identifiers assigned to the at least some of the plurality of network modules; and

managing, by the master module, transmissions comprising variable sized packets of the plurality of network modules over the network.

29. The method of claim 28, wherein the selecting, by the plurality of network modules coupled to the coaxial backbone, the one of the plurality of network modules to operate as the master module further comprises electing, by the plurality of network modules coupled to the coaxial backbone, the one of the plurality of network modules to operate as the master module.

30. The method of claim 28, further comprising allowing, by the master module, access to the network from a cable head-end via the gateway device.

31. A method for operating a network module in a network comprising a coaxial backbone, the method comprising:

participating, by the network module, in a selection, by a plurality of network modules coupled to the coaxial backbone, of a master module for the network,

wherein the network module, and the plurality of network modules, are each configured to operate as the master module for the network when selected as the master module for the network, and

at least one of the plurality of network modules, or the network module, comprising a gateway device that provides an interface between the network and an external network;

when the network module has been selected to operate as the master module for the network;

registering the plurality of network modules;

assigning a respective identifier to each of the plurality of network modules;

synchronizing the plurality of network modules;

allocating bandwidth to at least some of the plurality of network modules using a burst that comprises the respective identifiers assigned to the at least some of the plurality of network modules; and

managing transmissions comprising variable sized packets of the plurality of network modules over the network; and

when another network module of the plurality of network modules has been selected to operate as the master module for the network;

registering with the another network module of the plurality of network modules;

receiving an identifier from the another network module of the plurality of network modules; and

receiving a bandwidth allocation comprising the identifier from the another network module of the plurality of network modules.

32. The method of claim 31, wherein the participating, by the network module, in the selection, by the plurality of network modules coupled to the coaxial backbone, of the master module for the network further comprises participating, by the network module, in an election of the master module for the network by the plurality of network modules coupled to the coaxial backbone.

33. A computer program product comprising instructions stored in at least one non-transitory computer-readable storage medium, the instructions comprising:

instructions for participating, by a network module, in a selection, by a plurality of network modules coupled to a network comprising a coaxial backbone, of a master module for the network, wherein the network module, and the plurality of network modules, are each configured to operate as the master module for the network when selected as the master module for the network, and at least one of the plurality of network modules, or the network module, comprising a gateway device that provides an interface between the network and an external network;

when the network module has been selected to operate as the master module for the network;

instructions for registering the plurality of network modules;

instructions for assigning a respective identifier to each of the plurality of network modules;

instructions for synchronizing the plurality of network modules;

instructions for allocating bandwidth to at least some of the plurality of network modules using a burst that comprises the respective identifier assigned to the at least some of the plurality of network modules; and

instructions for managing transmissions comprising variable sized packets of the plurality of network modules over the network; and

when another network module of the plurality of network modules has been selected to operate as the master module for the network;

instructions for registering with the another network module of the plurality of network modules;

instructions for receiving an identifier from the another network module of the plurality of network modules; and

instructions for receiving a bandwidth allocation comprising the identifier from the another network module of the plurality of network modules.

34. The computer program product of claim 33, wherein the instructions for participating, by the network module, in the selection, by the plurality of network modules coupled to the network comprising the coaxial backbone, of the master module for the network further comprise instructions for participating, by the network module, in an election of the master module for the network by the plurality of network modules coupled to the network.

35. A network module, comprising:

one or more computing devices that are configured to;

participate in a selection, by a plurality of network modules coupled to a network comprising a coaxial backbone, of a master module for the network, wherein the network module, and the plurality of network modules, are each configured to operate as the master module for the network when selected as the master module for the network, and at least one of the plurality of network modules, or the network module, comprising a gateway device that provides an interface between the network and an external network;

when the network module has been selected to operate as the master module for the network;

register the plurality of network modules;

assign a respective identifier to each of the plurality of network modules;

synchronize the plurality of network modules;

allocate bandwidth to at least some of the plurality of network modules using a burst that comprises the respective identifiers assigned to the at least some of the plurality of network modules; and

manage transmissions comprising variable sized packets of the plurality of network modules over the network; and

when another network module of the plurality of network modules has been selected to operate as the master module for the network;

register with the another network module of the plurality of network modules;

receive an identifier from the another network module of the plurality of network modules; and

receive a bandwidth allocation comprising the identifier from the another network module of the plurality of network modules.

36. The network module of claim 35, wherein the one or more computing devices are further configured to participate in an election of the master module for the network by the plurality of network modules coupled to the network.